Laterally tippable truck



Feb. 20, 1951 L, E, FoRsg 2,542,321

LATERALLY TIPPABLE TRUCK Filed Sept. 20, 1948 2 Sheets-Sheet 1 Feb. 20,1951 L. E. FORSS LATERALLY TIPPABLE TRUCK 2 Sheets-Sheet 2 Filed Sept.20, 1948 Patented Feb. 20, 1951 M. L

LATERALLY TIPPABLE TRUCK Lars Eric Forss, Mjolby, Sweden Applieationseptembcr 20, 1948, Serial No. 50,187 In Sweden June 8, 1948 2 Claims.(01; 298-48) The present invention refers to laterally tippable truckspulled by tractors and provided with a box-like platform body, such asare principally used in road work for the conveyance of sand,

gravel, broken stones and the like and in the T.

mining industry for the transport of ore, slick and the like. It is anobject ofthe invention to provide a truck, where the tractor driver maydeposit the truck load in a place assigned for the purpose without hisleaving the tractor. It is also an object of the invention to permit thetractor driver to deposit the load in a string, while the tractor andthe truck are in operation. A further object is to permit unloading tothe one or the other side, the respective lateral gates beingautomatically opened there-at, and a final object is to permit theplatform body upon unloading to be automatically returned into thehorizontal position and to be locked in this position, while the openedlateral gate is locked at the same time.

The invention is illustrated in the accompanying drawings. Fig. 1 is anelevation and 2 a plan view of a truck in accordance with the invention.Figs. 3 and 4 show the truck viewed from the rear end, the platform bodybeing shown in its horizontal posit on in Fig. 3 and in tipping positionin Fig. 4. Figs. 5 and 6 show details on a larger scale of the releasingmechanism for the lateral gate and a contrivance for the returning ofthe platform body into horizontal position upon the tipping having beenperformed. Figs. '7 and 8 show details of locking bolts viewed from therear head wall and from above, respectively.

The tube l forms a central frame having the platform body pivotallyarranged thereon and the cross girders of the driving-wheels securedthereto. The side gates 2 of the platform body are pivoted aboutjournals 3 arranged at the upper edge of the gates. Secured on the tubeare one or more substantially triangular cross pieces Providedunderneath the bottom of the platform body are levers 5, two for eachcross piece, said levers being pivotally arranged about studs 6. The endportion of the levers adjacent to the side gate is formed into a hook Igripping about the lower edge of the gate. The other end 8 of the leversis rounded, so that it may slide easily on the cross piece 4 in thetipping operation, the lever being thus turned to bring the hook out ofengagement with the side gate, which latter then takes a verticalposition, while the load is being discharged.

i ofleaf springs I U.

The longitudinal sides of the platform body are provided at their loweredges with obliquely disposed sled-like slide bars 9 forming a stopdevice for the tipping movement of the platform body and adapted toslide on the ground, when the truck is moved forward during tipping.Arranged on the tube I are one or more groups In tipping, the springsare strained on the corresponding side, and unloading having beeneffected they return the platform body into the horizontal position. Twopivoted levers l2 are arranged on a transversely extending bar llsecured on the tube I adjacent to one head wall of the platform body,said levers having locking bolts l 3 secured thereto, which extendthrough the bar H in guides provided therein. Drawsprings I4 between thelevers and the bar tend to press the levers against the bar. Traces l5are secured to the free ends of the levers facing each other, saidtraces being extended through the tube l to the tractor driver to beactuated by means of a handle, lever, hand wheel or the like. Secured onone head wall of the platform body within reach of the locking boltsprovided on both sides of the tube are arcuate wearing prongs I6 havinga recess ll in the upper ends and a downwardly open arcuate slit 18 inthe lower ends thereof. When the platform body takes its horizontalposition, the looking bolts fall through the action of the springs M inbeneath the wearing prongs [ti and thus retain the platform body in itshorizontal position. When the platform body is tipped to the left, forexample, as shown in Fig. 4, the tractor driver releases the left handlocking bolt, tip ping then taking place to the left, whereupon hereleases the trace, the locking bolt then sliding on the wearing prongin order finally, after the platform body has been brought to aninclinat on suited for unloading, at an angle of approximately 45, tosnap into the recess I! so as to lock the platform body duringunloading, so that a premature return movement to the horizontalposition is prevented. During the tipping movement, the second lockingbolt slides out of the arcuate slit I 8 so as not to prevent the tippingmovement. The unloading or discharge being completed, the tractor driverpulls the trace once more, so that the locking bolt in consideration isreleased from the recess ll, whereupon the springs Ill return theplatform body into its horizontal position.

What I claim is:

1. A laterally discharging tip truck comprising,

in combination, a box-like, a laterally tippable platform body pivotallyarranged on a tube which forms a central frame and which carries crossgirders for the driving wheels of the truck and a number ofsubstantially triangular cross pieces, two levers pivotally mountedunderneath said platform body and adapted to slide with one end thereofon said cross pieces, the other ends of said levers being formed into ahook adapted to grip about the lower edge of an outwardly swingable sidegate in the horizontal position of the platform body and to release saidgate in the tipping of said platform body, through cooperation betweensaid first-mentioned end portions of the levers and said cross pieces; anumber of groups of leaf springs on said central frame tube to returnthe platform body into its horizontal position after the tip...

ping operation has been performed, a trahs versely extending bar on thecentral frame tube adjacent to one head wall of the platform body, twolevers pivoted on said bar and actuated by a drawspring, locking boltsconnected to said levers and extending through said bar, traces securedto the free ends of said last-mentioned levers and extending throughsaid central frame tube to Within reach of the tractor driver to beactuated by any suitable operating means, and

4 two arcuate wearing prongs on the head wall of the platform body infront of said locking bolts, the upper ends of said wearing prongshaving a recess and the lower ends thereof a downwardly open arcuateslit, said recesses and slits being adapted to cooperate with saidlocking bolts.

2. A laterally discharging tip truck as claimed in claim 1 and providedwith obliquely disposed sled-like sliding bars on the longitudinal sidesof the platform body.

LARS ERIC FORSS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 980,922 Carr Jan. 10, 1911 1116375 Pullar May 23, 1922 1,487,201 Brezovitz et a1 Mar. 18, 19241,935,974 Burner Nov. 21, 1926 FOREIGN PATENTS Number Country Date525,089 France of 1921

